F02D 41/28
Interface circuits
F02D41/28 (Interface circuits) appears on 1,293 US grants and 1,051 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,293
- Published applications
- 1,051
- Assignees
- 392
- Inventors
- 2,718
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 17 | 0 |
| 1982 | 11 | 0 |
| 1983 | 10 | 0 |
| 1984 | 11 | 0 |
| 1985 | 15 | 0 |
| 1986 | 13 | 0 |
| 1987 | 7 | 0 |
| 1988 | 15 | 0 |
| 1989 | 13 | 0 |
| 1990 | 23 | 0 |
| 1991 | 25 | 0 |
| 1992 | 27 | 0 |
| 1993 | 17 | 0 |
| 1994 | 11 | 0 |
| 1995 | 16 | 0 |
| 1996 | 22 | 0 |
| 1997 | 15 | 0 |
| 1998 | 19 | 0 |
| 1999 | 13 | 0 |
| 2000 | 11 | 0 |
| 2001 | 17 | 3 |
| 2002 | 18 | 15 |
| 2003 | 20 | 39 |
| 2004 | 19 | 38 |
| 2005 | 36 | 29 |
| 2006 | 39 | 35 |
| 2007 | 32 | 31 |
| 2008 | 26 | 47 |
| 2009 | 26 | 44 |
| 2010 | 37 | 38 |
| 2011 | 32 | 37 |
| 2012 | 31 | 35 |
| 2013 | 38 | 72 |
| 2014 | 35 | 33 |
| 2015 | 41 | 63 |
| 2016 | 51 | 74 |
| 2017 | 60 | 76 |
| 2018 | 69 | 58 |
| 2019 | 63 | 52 |
| 2020 | 62 | 59 |
| 2021 | 67 | 65 |
| 2022 | 55 | 50 |
| 2023 | 40 | 17 |
| 2024 | 29 | 17 |
| 2025 | 19 | 12 |
| 2026 | 3 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus and method for engine control14 Jul 2026US 12,683,828 B2Vieletech Inc.
- Low resistance exhaust system with correction module for regeneration control5 May 2026US 12,618,353 B1
- Internal combustion engine misfire detecting device and misfire detecting method13 Jan 2026US 12,523,170 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- System for checking a correct mounting of a sensor30 Dec 2025US 12,510,039 B2Liebherr-Components Colmar SAS
- Method for dynamically determining a firing pattern for an engine with dynamic cylinder activation and a system implementing the method16 Dec 2025US 12,497,928 B2Purdue Research Foundation
- Non-intrusive fueling event measurement for fueling systems8 Oct 2026US 2026/0309103 A1Cummins-Scania HPCR System, LLC
- Control Device for Internal Combustion Engine20 Aug 2026US 2026/0243212 A1Hitachi Astemo, Ltd.
- Engine diagnosis system and engine diagnosis method20 Aug 2026US 2026/0243629 A1Komatsu Ltd.
- Fuel type detection for internal combustion engine6 Aug 2026US 2026/0226868 A1Caterpillar Inc.
- Detecting knock using an arima model6 Aug 2026US 2026/0226878 A1Robert Bosch GmbH
Most cited
By later US patents
- Flow meter567US 6,874,480 B1Combustion Dynamics Corp. · 2005
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- Control system and method for a concrete vehicle147US 7,792,618 B2Oshkosh Corporation · 2010
- Firing fraction management in skip fire engine control121US 9,086,020 B2Tula Technology, Inc. · 2015
- System and method for monitoring and detecting faults in a closed-loop system118US 8,700,360 B2Cummins Intellectual Properties, Inc. · 2014